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# 17 ) ll-F-5 9

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10/24/9 5 16:3 9 ©30 3 96 9 282 2 WAS O DENVE R Ig]001/01 7 

## A-90-3 7 3JT

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# NATIONA

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E AI RRESOURCES DIVISION

P.O. BOX2S287, Denver, CO 80225-0287 ^



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# FMJOL g £ Telephone: (303) Fax: (303) 969-2822

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sheet) Office Location: J2795 W. Alamf.ua Paway, Room 215, Lakewood, CO 80228, P. 3

10/24/9 5 16:3 9 ©30 3 96 9 282 2 . WAS O DENVE R®002/01 7



### Februar y 13 , 199 2 N361 5 (SER-ODN

)

Mr . CH . Fancy , P.E. , Deputy Chie f Bureau o f

Ai rQualit y Managemen t Florid aDepartmen to f Environmenta l Regulatio n Twin Towers Offic e Buildin g 260 0 Blai rSton e Roa d Tallahassee , Florid a32399-240 0 Dea rMr . Fancy :

W e hav e reviewe

d th e Indiantow

nCogeneration , L.P . (Indiantown ) Electri c Powe r Plant Sit e Technica l Evaluatio nan d Preliminar

y Determinatio

nDocumen t regardin

g a propose

d cogeneratio

nfacilit

y near Indiantown , Florida . Th e Indiantow

n facility

wil l b e a majo r sourc e o f nitrogenoxide s (NO*) , carbo n monoxide , particulat e matter , an d sulfu r dioxid

e (SOj) , an

d wil l b

e locate

d approximatel y

14 5 k m northo f Everglade s NP , a clas s I ai r quality are a administere

d b y th e Nationa l Par

k Service . W

e hav e th e followin

g comment s regardin

g th e Technica l Evaluatio nan d Preliminar

y Determinatio

nDocument .
W e agre e tha t th

e us e o f a baghous e to contro l particulat e matte r emissions , an d a hig

hefficienc

y (9 5 percent ) spra y dryer absorber to remov e S0 2 represent s bes t availabl e contro l technolog y fo r th e propose

d boiler . Fo

r NO , control , Indiantow npropose s t o us e advance d combustio

ncontrols , low-NO * burners , an

d selectiv

e non-catalyti c reductio n(SNCR) , resultin

g ina N0 „ limi t o f 0.1 7 pound s pe r millio nBt u (lb/MMBtu) .

W e understan

d that Indiantown' s propose d N0 Xcontrol s ar

e th e sam e a s thos e proposed b

y Keyston

e Cogeneratio

nSystem

s (Keystone ) inGlouceste r County , Ne w Jersey . Th

e Keyston

e permi t allow

s a ninitia l maximu

m NO * rat e o f 0.1 7 lb/MMBtu , bu t als o include s a conditio ntha t require s Keyston e t o desig

n an d optimiz e th

e SNC Rsyste m t o achiev

e a NO

xemissio

nrat e o f les s than0.1 0 lb/MMBtu . Anothe r conditio ni nth e Keyston

e permi t state s tha t a t th e en d o f th e firs t two-yea r operatin g period , th

e 0.1 7 lb/MMBtu limi t shal l b e revise d downwar d c o reflec t th

e rat e tha t i s demonstrate d to b e consistentl y

achieve

d b y th e SNC Rsystem . W

e recommen

d that i f Indiantow ndoe s instal l th

e SNC R system , the

y b e require

d t o mee t simila

r condition s a s thos e i nth e Keystone permit .

A s you know , EPA-Regio n4 recently

revise

d th e PS D permi t for Orland o Utilitie s Stanto

nUni t 2 . Th

e permi t no

w require s Orland

o Utilitie s to instal l a Selectiv

e Catalyti c Reductio n(SCR ) syste

m o nUni t 2 to reduc e NO x emissions . Th

e SC Rsyste m i s to.b

e designe

d t o achiev

e a NO , emissio

nrat e o f les s tha

n0.1 0 lb/MMBtu . Similarly , in December 1990 , th e Ne w Jerse y10/24/9 5 16:4 0 ©30 3 96 9 282 2 WAS O DENVE R@003/01 7

Departmen t o f "Environmenta l Protectio ngrante

d a permi t t

o Chamber s Cogeneratio

ntha t require s a SC Rsyste m designe

d t o mee t a 0.1 0 lb/MMBt u limit . ' Finally , th e Virgini a Department o f Ai r Pollutio nContro l recentl y issue d draf t permit s fo r tw o coal-fire

d cogeneratio

nfacilitie s tha t requir e SC Rto contro l N0 Xemission s (Hadso nPower an

d Cogentrix-Dinwiddie) . Given th e recent development s inth e SC Rtechnolog

y an d th e fac t tha t othe r permittin g authoritie s are no w requirin

g SC Rfo r coal-fire

d boilers , we as k tha t you requir e Indiantow

nto reconsider SC

Rfo r thei r propose

d boile r a s well . Indiantow

n used th

e EP A ISCS T mode l fo

r th e cumulativ

e clas s I incremen t analysi s an

d include

d a tota l o f 2 3 increment-consumin g sources . Th

e result s o f thi s analysi s sho w that onc e in198 3 an d once agai ni n198 4 th e 3-hou r an d 24-hou r clas s I S0 2 increment s wer e exceede d (highes t concentration s o f 30. 5 micrograms pe r cubi c mete r (ug/m 3 ) an d 6. 0 ug/m

3 , respectively) . However , th e hig hsecond-hig

hconcentration s durin g thes e episode s wer e belo w th e allowabl e increment . Therefore , th e clas s I increment s fo r bot hth

e 3-hou r an d 24-hou

r averagin

g period s are exceeded , bu t no t ye t violated . Th e hig hsecond-hig

h concentratio

nfo r 198 3 dat a wa s 4. 8 ug/m 3 , whic hi s 9 6 percent o f th e clas s I incremen t o f 5 ug/m 3

. A s yo u ma y know , i f a propose d sourc e wil l caus e or contribut e to a clas s I increment violation , th e applicant wil l need to as k u s to certify

tha t there wil l b

e n o advers e impact s to clas s I are a resource s befor e th

e projec t ca

nb e permitted . Indiantow

nonl y reporte

d th e hig han d high-second-hig

hconcentration s pe r yea r fo r our review . I nth e future , i f th

e applicant i s modelin g wit hth

e ISCS T model , we as k tha t the y provid e u s wit hth

e "Ma x50 " tabl e so tha t we cankno w mor e abou t th

e locatio

nan d magnitud

e o f impact s a

t other receptor s i nth e park . I naddition , Indiantown' s tota l ambien t analysi s wa s overl y conservativ

e becaus e the

y modele d al l PS D an

d existin

g sources , an

d thenadde

d thos e concentration s t o monitore d ambien

t backgroun

d levels . A

mor e realisti c tota l ambient impact s analysi s fo r clas s I area s i s performe d b y modelin

g th e proposed sourc e an d an y newl y permitted , but no t ye t operating , sourc e an d addin g thes e impact s to th e ambien

t backgroun

d concentrations . Indiantow

nperforme

d a visibility

analysi s usin

g th e EP A mode l VISCREEN . Th e proposed projec t passe d th e Leve l I VISCREE N test , indicatin

g tha t th

e propose d emission s woul d hav e lo w potentia l fo

r visibility

impairment du

e t o plum e impact s inEverglade s NP .
I nou r revie

w o f th

e Florid

a Power an

d Ligh t Technica l Evaluationan d Preliminar

y Determinatio

nDocument (Ma

y 1991 ) w

e identifie

d ou r concern s wit h th e effects , emission s fro m th e propose

d facilit

y ma y hav e o nth e ai r quality relate d value s (AQRVs ) a t Everglade s NP . W e als o hav

e th e sam e genera l concern s vit

hth e Indiantow

nproject : Th

e Indiantow

nTechnica l Evaluationan d Preliminar

y Determinatio

nDocument state s tha t th e predicte

d emission s fro

m th e proposed project , includin g a background''concentration , wil l be belo w th e State' s Ambient Ai r Qualit y Standard s includin g th e secondar

y Nationa l Ambient Ai r Quality

Standard s (NAAQS) , whichwer e designe d t o protec t vegetation fro m th e advers e impact s o f ai r pollutants . Th e documen

t state s tha t thi s projec t i s no t expecte

d t o hav e a harmfu l impac t o nsoil s an

d vegetation . We wis ht o agai nclarif y

tha t there ar

e documente

d effect s belo

w th e NAAQS , an

d tha t complianc e wit hth e NAAQ S doe s no t ensure tha t ther e wil l be n

o negativ

eP. 5

10/24/9 5 16:4 1 ©30 3 96 9 282 2 WAS O DENVE R©004/01 7

impacts . Th

e secondar

y NAAQ S ar

e base d primaril y

o neffect s o

ncas hcrop s an

d ma y no t reflec t a leve l o f protectio nfo r al l AQRV

s suc ha s nativ

e vegetation foun d i nclas s I areas . I naddition , th e secondar

y NAAQ S ar

e nationa l level s se t to protec t agains t effect s du e t o multipl e an

d divers e source s an d may no t provide adequat e protectio nfo r sensitiv

e specie s foun

d inonl y

on e area o f th e country , no r d

o the y addres s synergisti c effect s o f multipl e pollutants . Therefore , there ma y b e instances , an

d ongoin

g studie s ar

e confirmin

g this , wher e advers e effect s t o AQRV s ca noccu r a t level s belo

w th e NAAQS . Th e locatio

no f Everglade s N

P a t th e souther

n tip o f th

e Florid

a peninsul a allows for a unique ecosyste m whos e nativ

e communitie s reflec t bot htemperat e an d subtropica l influences . Studie s hav e show ntha t fertilizatio nca n decreas e th

e fros t hardines s o f certai nplant species . W e ar e concerned tha t th e nitrate s resultin g fro m emission s woul d favo r mor e fros t tolerant species , thereb y causin

g majo r shift s i ncommunit y compositio

nan d structure . Fo r example , Sout hFlorid a slashpin

e (Pinu

s elliott i var . densa ) i s a majo r constituen t o f th

e uplan d park community , an d i s th e predominan t canop y tre e species . Th

e slas hpine s inth e par k gro w o na limestone-derive d soil , an

d the y are mos t likely

nitroge

nlimited . Fertilizatio nb y anthropogeni c nitrogencoul d caus e th e pine s to continu

e growin

g int o th

e winter , increasin g th e likelihoo

d o f fros t damage . Over time , th e slashpine s coul d b e replaced b y a tree specie s tha t i s les s responsiv e to fertilization .

W e are als o concerne d about th

e role s tha t nitrogenoxide s an d volatil e organi c compound s pla y a s ozon

e precursors . Fumigatio nstudie s conducted i n chamber s hav

e show ntha t slashpin

e seedling s ar

e particularl y

sensitiv

e t o chroni c ozon

e concentration s belo w th e NAAQS . Th

e seedling s showe

d reduction s i nroo t growt heve

nbefore visibl e folia r injur y wa s observed . W

e hav e no t ye t duplicate

d th e experiment inth e field to determin e i f curren t ozon e level s inEverglade s N P induc e th

e sam e degree o f growthreduction s a s wer e observed i nth

e chambers . Lichen s an

d bryophyte s ar

e commo

ninth

e park , an

d du e t o thei r unique morphology , ar

e particularl y

sensitiv

e to ai r pollutant s suc ha s sulfu

r dioxide . Th

e nitrate s inacid rai nma y als o b

e harmfu l t o bryophytes , particularl y

to tan

k bryophyte s whic haccumulat e rainwate r i na cup-shaped basi nforme

d b y overlappin

g leaves . Tw

o specie s o f epiphyte s foun d i nth

e park , Tillandsi a flexuosa . a bromsliad , an d Epidendru

m noctumum . anorchid , ar e considered threatene d unde r th

s Preservatio

no f Nativ

e Flora o f Florida Act . Th

e sensitivity

o f thes e tw

o threatene

d specie s to ai r pollutant s i s no t know nat thi s time . Nitrogenoxid

e an d sulfu r dioxid

e emission s ma

y lea d t o th e acidificatio

no f th e hug e wetlan

d syste m tha t comprise s mucho f th e park . Acidificationlead s t o change s inth

e flora an

d faun a o f a naquati c ecosystem . Finally , we are concerne d abou t th e hig hlevel s o f mercur y tha t hav

e bee nj foun d i nth

e federall y

endangere

d Florid

a panther an

d othe r animal s inth e / park . I t i s no t know na t thi s tim

e wha t th

e sourc e o f th

e mercur

y is , bu t w

e I pOi encourag e you t o limi t mercur y emission s i nth

e vicinity

o f th e par k unti l th

e \ w ' sourc e ca

n b e identifie

d an d remedia l actio

ntaken . -. — 

# H <P. 6



### 10/24/9 5 16:4 1 ©30 3 96 9 282 2 WAS O DENVE R0005/01 7

I f yo u hav e any"question s regardin g thi s matter , pleas e contac t De e Mors e o f ou r Ai r Qualit y Divisio n i n Denve r a t (303 ) 969-2071

. Sincerely ,

Regiona l Directo r Southeas t Region
bcc : SERO : AQ C EVER : Supt . AQD-DEN : Mors ePJ_

10/24/9 5 16:4 1 ©30 3 96 9 282 2 WAS O DENVER1^1006/01 7

Revie w o f Technica l Evaluatio nan d Preliminar y

Determinatio nDocumen t fo r Florid a Powe r an

d Ligh t Company' s Marti n Coa l Gasification/Combine d Cycl e Projec t

by Policy , Planning , an d Permi t Revie w

Branc h Ai r Qualit y

Division , Nationa l Par k Servic e

INTRODUCTIO N

Florid a Powe r an d Ligh t Compan

y (FPL ) i s proposin g a generatio nexpansio n projec t a t it s Marti n Powe r Plan t sit e i nMarti nCounty , Florida . The expansio nprojec t i s calle d the Marti nCoa l Gasification/Combine d Cycl e (CG/CC ) project , an d consist s o f four , 40 0 M W CGlCC units . Eac hcombine d cycl e uni t wil l consis t o f two combustio nturbine s an d two hea t recover y stea m generators . The Marti n facilit y i s locate d 1 3 k

m northwes t o f Indiantown , and 14 1 k m nort ho f Everglade s Nationa l Park (NP) , a clas s I ai r qualit y are a administere d b y

th e Nationa l Park Service .
Th e Marti nCG/C C projec t wil l be buil t i nthre e phases . Phas e I wil l consis t o f th e additio n o f two ne w combine d -cycl e unit s (Unit s 3 and 4) , t o b e fire d primaril y

by natura l gas , wit hNo . 2 distillat e fue l oi l a s a backu p fuel . Phase I I wil l consis t o f th e additio no f th e othe r tw o combine d cycle unit s (Unit s 5 and 6) . I n Phas e III , coa l gasificatio nfacilitie s wil l be added , whic hwil l includ e fou r unit s t o serve a s th e sourc e o f fue l fo r th e fou r combine d cycl e unit s installe d i nPhase s I an d II .
Th e propose d projec t als o consist s o f tw o auxiliar y

stea m boiler s (60,00 0 lb/h r each ) fo r start-u p an d two , 75 0 K

W diese l generator s fo r emergenc y electricity . I n addition , a t the sit e ther e ar e tw o existin g 86 3 M

W No . 6 fue l oil/natura l ga s fire d boilers . Th e significan t emissio n increase s tha t woul d resul t fro m th e Marti n CG/C C projec t ar e estimate d a s follows :

Pollutan t

Sulfu r Dioxid e (S0 2 ) Nitroge nOxide s (N0 X ) Carbo nMonoxide (CO ) Sulfuri c Aci d Mis t (H 2 S0, ) Particulate Matte r (PM ) PM l 0 Volatile Organi c Compound s Lea d (Pb ) Mercur y

(Hg ) Inorgani c Arseni c (As ) Berylliu

m (Be ) Emission s Increas e (tons/year )

30,06 5 15,17 2 4,78 5 3,67 7 2,26 4 2,26 4 (VOC ) 77 4

11. 5 0.9 8 0.6 2 0.0 2PJ3

_

10/24/9 5 16:4 2 ©30 3 96 9 282 2 WAS O DENVE Rifl007/01 /

Followin

g ar e ou r comment s o

nth e bes t availabl e contro l technolog y analysis , th e ai r qualit

y analysis , an

d th e propose

d project' s potentia l impact s o nth e ai r quality

relate d value s a

t Everglade s NP .

BES T AVAILABL E CONTRO L TECHNOLOG

Y(BACT ) ANALYSI S

T o minimiz e emission s o f al l th e pollutant s liste

d abov e (excep

t NO, ) fro

m th e proposed turbines , FP L propose s t o utiliz e proper combustio ntechnique s an

d t o fire th

e turbine s wit hclea nfuel s (initially , natura l ga s an d lo w sulfu r oil) . W

e agre e tha t thes e measure s constitut e BAC T for thes e pollutants . However , w

e d o no t agree that th e propose

d 0. 5 percent maximu m sulfu r content No . 2 fue l oi l (averag e o f 0. 3 percent sulfur ) i s th e "best " fue l oi l tha t i s available . I naddition , w e d o no t agree wit hth e statement i nth

e Florid

a Departmen t o f Environmenta l Regulation' s (FDER ) BAC T discussio ntha t thi s sulfu r content i s consistent wit hwha t ha s beenestablishe d a s BAC T o

na nationa l basi s an

d fo r recen t permittin

g o f ga s turbine s i nFlorida . Jus t recently , th

e FDE Rdetermine

d that BACT fo

r a combustio

nturbin

e proposed b

y th e City o f Lakelan

d i s burnin

g a fue l oi l wit ha maximu m sulfu r conten t o f 0.2 0 percent . Also , w e hav e reviewe

d other combustio

nturbin

e project s tha t wer e permitted t o bur nNo . 2 fue l oi l wit ha maximu m sulfu r content o f 0.2 0 percent . I nfact , Ne w Jerse y ha s recently

issue d combustio

nturbin

e permit s tha t specifie

d kerosen

e wit ha maximu

m sulfu r content o f 0.0 4 percen t a s th e turbin e backu p fuel . Becaus e th e propose

d FP L turbine s woul d b e permitted t o fire fue l oi l onl y u p t o 50 0 hour s pe r year pe r turbine , th e adde d cost s associate

d wit hburnin

g a lower sulfu

r content oi l shoul d no t b e prohibitive . Therefore , giventh e potentia l S0 2 clas s I incremen t problem

s discusse

d belo w (se e Ai r Quality

Analysi s section) , th e potentia l impact s o nsensitiv

e ai r quality relate d resource s a

t th e par k (se e Ai r Qualit

y Relate d Value s Analysi s section) , an

d th e fac t tha t lower sulfu r conten

t oil s ar

e bein g required for othe r ga s turbin

e projects , w

e recommen

d that th

e FDE Rlower th

e maximu

m sulfu r content fo

r th e FP L turbine s fro

m 0. 5 percent to 0.2 0 percent .

For contro l o f N0 Xemissions , FPL propose s t o us e a dr

y lo w N0 Xcombustor turbin e design . Th

e resultin

g N0 Xrat e propose

d fo r th e turbine s i s 2 5 part s pe r million (ppm ) for ga s firing , 4 2 pp m fo r coa l derive

d ga s firing , an

d 6 5 pp m fo r oi l firing . Florid a Power an

d Ligh t an d th e FDE Rals o considered Selectiv

e Catalyti c Reductio n(SCR ) a s a

nalternativ

e N0 Xcontro l system . For natura l ga s firing , th e SC Rtechnolog

y could reduc e NO . emission s fro m th e proposed turbine s t o les s tha n9 ppm , bu

t a t a substantia l cost . Th e FDE R calculate

d a cos t effectivenes s of $7,59 0 per to no f N0 Xremove

d to reduc e th

e turbin e N0 Xemission s fro m th e propose

d 2 5 pp m leve l t o 9 ppm . Based o nthi s cos t effectivenes s value , th e FDE Rdetermine

d tha t th

e us e o f SC

Rtechnolog

y i s no t justified a

t thi s time . However , fo r coa l derive

d ga s firing , whic h i s proposed fo

r Phas e III , th

e cos t effectivenes s o f usin g SC Rt o reduc e N0 X emission ? fro

m 4 2 pp m t o 9 pp

m i s only

S3,50 6 per ton , whic happear s reasonable . Consequently , w e ar e please

d that th

e FDE Rwil l requir e a

nin dept hcos t analysi s fo r SC Rwhe nFP L elect s t o procee

d wit hth

e permittin

g fo r Phas e II I o f th

e project .

### 10/24/9 5 16:4 2 ©30 3 96 9 282 2 WAS UUtAvt K; _~Z~77ZT,

I f th e propose d"low

N0 X

### combustor " design , rathe r tha na "standard " combusto r desig n(4 2 pp

m N0 X

### fo r ga s firing) , i s use da s th e bas e cas e i nth e BAC T determination , w e agre e tha t SC Rtechnology i s no t cos t effectiv e o na dollar s pe r to nbasis . W e als o agre e tha t wit hth e 50 0 hour s pe r yea r pe r turbin e fue l oi l limitation , SCRi s no t cos t effectiv e fo r the FP L turbines . However , althoug hSC Rwil l no t be require da t thi s time , w e als o believ e tha t thi s technolog y

shoul db e give nseriou s consideratio nfo r th e coa l derive dga s option , an

dfo r futur e permi t application s fo r combined-cycl e ga s turbin e project s a s well .
I t i s interestin g t o not e tha t i f the cos t effectivenes s calculatio nfo r SC R i s mad e assumin g a standar dcombusto r turbin e design , th e us e o f SC Rcoul db e considere dreasonable . Fo r example , a s mentione dabove , usin g th e SC Rcost s provide dby

FPL , th e cos t effectivenes s t o reduc e N0 „ emission s fro m 4 2 ppm t o 9 pp m wit hSC Rwoul donl y b e $3,506/ton . I nessence , by choosin g a n "intermediate " N0 X

### contro l strategy , an dusin g thi s strateg y a s th e bas e case , FP L i s no t bein g require dt o us e SCRwhe nfirin g natura l gas . However , i t i s als o eviden t tha t th e BAC T proces s i s drivin g emission s downward , andtha t applicant s ar e lookin g fo r way s t o inherentl y lowe r emissions , rathe r tha n optin g fo r add-o nflu e ga s cleanin g technologies . Assumin g thi s proces s continues , andinherentl y lowe r emittin g system s ar e developed , suc ha n approac hma y

b e preferre dfro

m a tota l environmenta l standpoint .

AI RQUALIT YANALYSI S Florid a Powe r an

dLigh t use dEPA' s Industria l Sourc e Comple xShor t Ter m (ISCST ) mode l t o predic t ai r qualit y impact s o f the propose dproject . Th e analysi s examine dfive year s o f Wes t Pal m Beach , Florida , Nationa l Weathe r Servic e (NWS ) dat a fro m 1982-1986 . Florid a Powe r an dLigh t onl y

modele dou t t o a distanc e o f 5 0 k m fro m th e Marti nfacility . Consequently , the y di dno t addres s ai r qualit y

impact s a t Everglade s N P (14 1 k m away) . Th e result s o f FPL's analysi s show

tha t th e propose demission s woul dno t caus e o r contribut e t o violation s o f th e clas s I I PS D increment s o r the Nationa l Ambien t Ai r Qualit y Standards . However , becaus e impact s wer e no t predicte dfo r Everglade s NP , w e d o no t know

i f the propose demissions , i ncombinatio nwit hal l othe r increment-consumin g sources , woul dcaus e clas s I incremen t exceedance s a t th e park . W e als o d o no t know wha t the tota l ambien t pollutan t concentration s woul db e a t th e park .
O npag e 5 4 o f th e FDER' s Technica l Evaluatio nan dPreliminar y

Determinatio n Document , i t states : "Althoug hth e propose dsourc e ha s a significan t impac t fo r S0 Z 

### a t a distanc e greate r tha n5 0 k m fro m it s site , the mode l i s limite d t o us e withi na 5 0 k m distanc e fo r regulator y applications . However , give nth e predicte dimpact s a t 5 0 k m fo r eac ho f thes e pollutants , an

dthe long distance ' t o th e Everglades , i t i s unlikel y tha t th e propose dsourc e woul d-significantl y impac t th e Clas s I Area. " - •P.1 0

10/24/9 5 16:4 3 ©30 3 96 9 282 2 WAS O DENVE R©009/01 7

W e disagre e wit hbot ho f thes e statements.•..• ; First , fo r regulator

y application s wit hpotentia l impact s o na clas s I area , us e o f th e ISCS T mode l i s no t necessaril y

liiffite

d to 5 0 km . Usin

g a 5 0 k

m cutof f fo

r modelin

g clas s I impact s woul d b

e inconsistent wit hEPA' s modelin g guidelines . Whil e i t i s tru

e tha t EP

A ha s provide

d guidanc e o

nth e us e o f dispersio n model s an

d generall y

limit s th

e applicatio

no f ai r qualit

y model s to a downwin d distanc e o f n

o mor e tha

n5 0 km , i t shoul d b e note d tha t a

nexceptio

n wa s mad e to thes e guideline s fo r case s whe na clas s I area might b e impacted . Referrin

g to th e 5 0 k m limitatio

nEP A states , ".. . sinc e th e 197 7 Amendment s provide specia l concer nfo r clas s I areas , an

y reasonabl y

expecte

d impact s fo

r thes e area s mus t b

e considere

d irrespectiv

e o f th e 5 0 kilomete r limitatio nor th e abov e significanc e levels. " (Se e Jun e 19 , 1978 , Federa l Register , p . 26398) .

I naddition , Sectio n7.2. 6 of-EPA'S-"Guidelin e o nAi r Qualit

y Models" , revise

d Jul y 1986 , state s inpart : - "Sectio n165(e ) o f th

e Clea nAi r Ac t require s that suspecte d significan t impact s o nPS D Clas s I area s b e determined . However , th e usefu l distanc e t o whic hmos t Gaussia nmodel s ar

e considere

d accurat e fo

r settin

g emissio

n limit s i s 5 0 km . Sinc e i nman y case s Clas s I area s ma y b e threatene

d a t distance s greater tha n 5 0 k m fro m ne w sources , som

e procedure i s neede d t o (1 ) determin

e i f a significant impac t wil l occur , an d (2 ) identify

th e mode l t o b e used insettin

g a nemissio

nlimi t i f th

e Clas s I increment s ar e threatene

d (model s fo

r thi s purpos e shoul d b e approve

d fo r us e on a case-by-cas e basi s a s require d inSectio

n3.2) . Thi s procedur e an d th e model s selecte

d fo r us e shoul d b

e determine

d i n consultatio

nwit hth

e EP A Regiona l Offic e an d th e appropriat e Federa l Lan

d Manage r (FLM). P

Second , w

e d o no t agree wit hth e statement tha t i t i s unlikel y tha t th

e proposed emission s woul d significantl y impac t Everglade s NP . I norde r to asses s th

e clas s I S0 2 an

d N0 2 increment consumptio na t Everglade s N

P a s a resul t o f th

e propose

d FPL emissions , w e performe

d a dispersio

nmodelin

g analysi s usin

g th e ISCS T mode l an

d 198 6 Wes t Pal

m Beach , Florida , surfac e an d uppe r ai r NW

S meteorologica l data . Fo r ou r short-ter

m analyse s (3-hr , 24-h r averagin

g times) , w

e modele

d th e propose

d emission s fro

m th e eight turbine s assumin g fue l oi l firin g (0. 5 percent sulfu r content) . Th

e tai l ga s incinerator s associate d wit hPhas e III , th e emergenc

y backu p diese l generators , an

d th e start-u

p stea m boiler s wer e no t modeled . Thi s sourc e configuratio

nprovide s a realisti c evaluatio no f actua l condition s sinc e th e emergenc

y _generato r an

d start u

p boiler s wil l no t normall y operat e simultaneousl y

wit hth

e ga s turbines , an

d th e turbine s wil l no t fire oi l whe n th e coa l derive

d ga s i s bein

g produce

d (i.e. , whe nth

e tai l ga s incinerator s are inoperation) ._ —

_P.1 1 10/24/9 5 16:4 4 ©30 3 96 9 282 2 WAS O DENVER©010/01 7

Th e emission s used i nthi s analysi s wer e thos e foun d inTabl e 3 , "Maximu m Pollutan t Emission s fo r th e Propose

d Project" , o

npag e 5 1 o f th

e FDER' s ai r quality analysis . Th

e stack parameter s applie d wer e thos e als o provide d b y th e FDE R(Tabl e 2 , pag

e 50) . Th

e ISCS T mode l wa s ru nusin g pola r coordinate s an d receptor s a

t th e norther

nboundarie s o f Everglade s NP . Th e direction s an

d distance s fro

m th e Marti nfacilit

y use d inth e analysi s are a s follows : 17 0 degree s - 20 5 km ; 18 0 degree s - 14 1 km ; 19 0 degree s - 16 4 km ; 20 0 degree s - 15 2 km ; 21 0 degree s - 15 7 km . Base d o nth e result s o f ou

r analysis , usin

g th e on e yea r o f 198 6 meteorologica l data , a tota l o f 7 6 day s a t thes e 5 receptor s wil l experienc e a 24-hou r concentratio

no f greater tha

n1 ug/m

3 , whic hi s th

e leve l tha t i s oftenincorrectly cite d a s th e clas s I significant impac t level . Th e highes t concentratio nmodele

d wa s 3.0 6 ug/m 3 a t 20 0 degree s - 15 2 km , o n da y 235 . Th

e maximu

m clas s I 3-hou

r an d annua l S0 2 concentration s predicted wer e 16.4 7 ug/m 3 an d 0.1 4 ug/m

3 , respectively . Th e annua l N0 2 Clas s I incremen t impac t wa s 0.08 2 ug/m 3

. Th e S0 2 3-h

r an d 24-h r predicte

d concentration s are 6 6 percen t an

d 6 1 percent o f th e tota l allowabl e clas s I increments , respectively . Modelin g o f onl y

th e fou r turbine s propose d for Phas e I indicate s 3-hou

r an d 24-hou

r averag

e impact s o f 8.2 5 ug/m 3 an d 1.5 3 ug/m

3 , whic hare stil l 3 3 percent an d 3 1 percent o f th

e allowabl e clas s I increments , respectively .

W e realiz e tha t us e o f th e ISCS T mode l a

t a distanc e o f 14 1 k m ma y b e stretchin

g th e validity

o f thi s model . However , us e o f thi s mode l t o calculat e a 24-hou r averag

e concentratio

n-ma y b e considere

d conservativ

e becaus e o f plum

e integrit

y a t thi s distance . Plum e integrity

for 3 hour s canno t b

e considere

d a nissue . Revie

w o f th e highes t 24-hou

r perio d (da y 23 5 a t 20 0 degrees ) indicate s tha t fo r 5 hours , th

e atmospheri c stability an d win d spee d wer e nighttim

e E an d F stabilit

y an d 2 t o 4. 6 m/se c win d speed . Stabl e condition s wit hmoderat e win d speeds ar

e conduciv

e t o a plum

e remainin

g intac t ove r flat terrain , an d therefore , lon

g rang e transpor t i s probable . I f the y s o choose , FP L ca

naddres s lon

g rang e impact s for Phas e I o f th e project , a s wel l a s fo

r Phase s I I an

d III , wit hth

e EP A Appendi x"B " mode l MESOPUF F II . W e ar e availabl e t

o discus s th

e us e o f thi s model .

I t i s important to not e that ou r analysi s only

include

d emission s fro

m th e proposed FP L turbines . N o other increment-consumin g source s wer e included i n ou r analysis . I f suc hsource s wer e modeled , i t i s possibl e tha t th e proposed emission s coul d caus e o r contribut e t o clas s I increment exceedance s (especiall y

fo r th e S0 2 . 3-h

r an d 24-h r averagin

g times ) a

t Everglade s NP .
A s mentioned above , ou r short-ter

m analyse s include

d S0 2 emission s based o n firin g th e proposed 0. 5 percent maximu m sulfu r conten

t fue l oil . Becaus e th e predicted S0 2 concentration s ar e directly

proportiona l t

o th e S0 2 emissions , whic hare , i nturn , directl y proportiona l to th e sulfu r content o f th

e fuel , th e predicted ambient concentration s could b e lowere

d b y lowerin

g th e sulfu r conter. t o f th

e oil . For example , i f th e maximu

m sulfu r content o f th

e backu p fue l oi l wa s lowere d fro m 0. 5 percent t o 0.2 0 percent , a s recommended abov e (se e BAC T section) , th e estimate

d S0 2 emission s woul d b e reduce

d b y 6 0 percent , resultin

g i na 6 0 percent reductio ninpredicte

d S0 2 concentration s a t Everglade s NP .

><.u *10/24/9 5 16:4 4 ©30 3 96 9 282 2 WAS O DENVE R



### I f suc h reduction s occurred , w e woul d fee l mot

e confiden tth a P.1 2 0011/01 7

tth e -Drcraased emission s woul d no t caus e incremen t exceedance s a t th e park

. However , becaus e th e incremen t statu s a t Everglade s N P woul d stil l b e uncertai n eve n unde r th e lowe r emission s scenario , w e recommen d tha t the FDE R includ e a conditio n i n the FP L permi t tha t make s i t clea r tha t clas s I impact s mus t b e adequatel y assesse d befor e constructio n o f Phase s I I an d II I ma ycommence .
I n additio n t o no t predicting incremen t impact s a t Everglade s NP , FP L als o faile d t o estimat e the tota l ambien t concentratio n level s a t the park

. T o asses s potentia l impact s o n sensitiv e ai r qualit yrelate d values , i t i s importan t fo r u s t o kno w th e tota l ambien t concentration s (incremen t plu s background ) a t th e clas s I area . Acumulativ e analysi s shoul d includ e al l permitte d an

d existing source s withi n 5 0 k mo f th e facility' s impac t are a tha t coul d potentiall yimpac t th e clas s I are a (thi s i s especiall yimportan t fo r annua l effec t determinations)

.
I n conclusion , w e hav e determine d tha t the FP L ai r qualit yanalysi s i s deficien t becaus e i t doe s no t addres s clas s I incremen t o r tota l ambien t impact s a t Everglade s NP

. Unles s FP L i s willin g t o lowe r th e maximu msulfu r conten t o f th e fue l oi l t o 0.2 0 percent , theyshoul d mode l thei r emissions , plu s al l othe r incremen t consuming emissions , t o determin e whethe r th e emission s fro

mth e propose d Marti n CG/C C projec t woul d caus e o r contribut e t o clas s I incremen t exceedance s a t Everglade s NP

. Suc h a n analysi s shoul d us e al l fiv e year s o f meteorologica l data

. Th e incrementa l impacts , whe n adde d t o th e impact s fromal l othe r backgroun d source s o f S0 2 , N0 2 , an d ozon e shoul d the n b e use d t o evaluat e the effect s o n the sensitiv e ai r qualit yrelate d value s i n Everglade s N P (se e Ai r Qualit yRelate d Value s Analysi s below)

.

AI R QUALIT Y RELATE D VALUE S (AQRVs ) ANALYSI S
Terrestria l an

d Aquati c Effect s
Th e FDER' s Technica l Evaluatio n an d Preliminar

yDeterminatio n Documen t (pag e 56 ) state s tha t sinc e th e propose d projec t woul d no t caus e an yexceedance s o f th e secondaryNationa l Ambien t Ai r Qualit yStandard s (NAAQS) , whic h wer e designe d t o protec t vegetatio n fro mth e advers e Impact s o f ai r pollutants , ther e woul d no t b e an yeffec t o n vegetation

. W e wis h t o clarif ytha t ther e ar e documente d effect s belo w th e NAAQS , an d tha t complianc e wit h th e NAAQ S doe s no t ensur e tha t ther e wil l b e n o negativ e impacts

. Th e secondaryNAAQ S ar e base d primaril yo n effect s o n cas h crops , suc h a s whea t an d tobacco , an

d ma yno t reflec t a leve l o f protectio n fo r al l AQRV s suc h a s nativ e vegetatio n foun d i n clas s I areas . I n addition , the secondar yNAAQ S ar e nationa l level s se t t o protec t agains t effect s du e t o multipl e an d divers e source s an d ma yno t provid e adequat e protectio n fo r sensitive

. specie s foun d i n onl yon e are a o f th e country , no r d o theyaddres s synergisti c effect s o f multipl e pollutants

. Therefore , ther e ma yb e instances , an d ongoing studie s ar e confirmin g this , wher e advers e effect s t o AQRV s ca n occu r a t level s belo w the NAAQS

.P.1 3

10/24/9 5 16:4 5 ©30 3 96 9 282 2 WAS O DENVE R1^1012/017

Th e locatio

no f Everglade s N

P a t th e souther

ntip o f th

e Florid

a peninsul a allow s fo r a unique ecosyste m whos e nativ

e communitie s reflec t bot htemperat e an d subtropical-influences . Mucho f southFlorida' s vegetatio ni s shape

d b y tw o competin

g forces : 1 ) recurrin g winte r freeze s that limi t th e northwar

d expansiono f subtropica l species , an d 2 ) inmil d year3 , th e lac k o f col d weathe r tha t man

y temperat e specie s require to break dormancy . Studie s hav e show ntha t fertilizatio nca ndecreas e th

e fros t hardines s o f certai nplan t species . W

e are concerne

d tha t th

e nitrate s resultin g fro m emission s woul d favor mor e fros t tolerant species , thereb y causin g majo r shift s i ncommunity compositio

nan d structure . Fo

r example , SouthFlorid a slas hpin

e (Pinus elliott i var . densa ) i s a majo r constituent o f th e uplan d park community , an d i s th e predominan t canop y tree species . Th

e slas hpine s i nth e par k gro

w o n a limestone-derived soil , an d the y ar e mos t likel y

nitrogenlimited . Fertilizatio

nb y anthropogeni c nitroge ncoul d caus e th

e pine s to continu e growin g int o th

e winter , increasin g th e likelihoo

d o f fros t damage . Ove r time , th e slas hpine s coul d b e replace d b y a tre e specie s tha t i s les s responsiv

e t o fertilization .

W e are als o concerne d abou t th e role s that N0 Xan

d VO C emission s pla

y a s ozon

e precursors . Fumigatio nstudie s conducte

d inchamber s hav

e show ntha t slas h pin e seedling s ar

e particularl y

sensitiv

e t o ozon e injury . Th

e seedling s showe d reduction s i nroot growthevenbefore visibl e foliar injur y wa s observed . W

e hav e no t ye t duplicate d th e experiment i nth

e fiel d t o determine i f current ozon

e level s i nEverglade s N P induce th

e sam e degre e o f growt h reduction s a s wer e observe d inth e chambers . Lichen s an

d bryophyte s %r

e commo

ninth

e park , an

d du e t o thei r unique morphology , are particularl y sensitiv

e to ai r pollutant s sucha s S0 2 . Th e nitrate s i naci d rai nma y als o b e harmfu l to bryophytes , particularl y t o tan k bryophyte s whic haccumulat e rainwater ina cup-shape d basi nforme

d b y overlappin

g leaves . Tw

o specie s o f epiphyte s foun d inth e park , Tillandsi a flexuosa . a bromeliad , an d Epidendru

m nocturnum . a

norchid , are considered threatened unde r th e Preservatio

no f Nativ

e Flora o f Florid a Act . Th

e sensitivity

o f thes e tw

o threatene

d specie s t

o ai r pollutant s i s no t know na t thi s time . Nitrogenoxid

e an d S0 2 emission s ma

y lea d t o th e acidificatio

no f th

e hug e wetlan d syste

m tha t comprise s mucho f th e park . Acidificatio nlead s to change s i nth

e flora an

d faun a o f a naquati c ecosystem . Th e abundanc e an

d biomas s o f benthi c invertebrate s decrease s an d th e communit

y compositio

n change s a s th

e pH o f th

e wate r drops . Th e los s o f pre

y ca nresul t i na declin e i nfis hpopulations . Additionally , man y amphibia

nan d fis hspecie s ar e unabl e to reproduc e a t lo w p H levels . Thi s ha s a profoun d effec t o

n consumer s highe r u

p th e foo d chain . Th

e federall y

endangere

d Everglade kite , peregrin

e falcon , souther

nbal d eagle , brow

npelican , an

d America

ncrocodil e foun d i nEverglade s N P al l depend , t o a lesser or greater extent , o na n abundan t suppl y

o f fishan

d amphibians fo

r food .

### 10/24/9 5 16:4 5 ©30 3 96 9 282 2 WAS O DENVER m

### Jl'l*. 

# W\ Finally , w e ar e concerne dabou t th e hig hlevel s o f mercur y tha t hav e been l foun di nth e federall y endangere dFlorid a panthe r andothe r animal s i nth e 1 park . It'i s no t knowna t thi s tim e wha t th e sourc e o f th e mercur y ia , bu t w e \ encourag e th e FDE Rt o limi t mercur y emission s i nth e vicinit y o f th e par k \ j [ unti l th e sourc e ca nb e identifie dan dremedia l actio ntaken . ^J Visibilit y

Impact s Florid a Powe r an

dLigh t di dperform

a visibilit y

analysi s usin g th e VISCREE N mode l fo r a Leve l 1 screenin g analysis . Base do nthi s analysis , th e FDE R conclude dtha t n o Impac t o nvisibilit y i s expecte da t Everglade s N P a s a resul t o f th e propose dfacility . However , the FDE Rdi dno t includ e an y o f th e dat a use di nth e analysis , suc ha s backgroun dozon e concentration s o r visua l range •

A s w e hav e indicate di npas t reviews , th e broa dconclusio ntha t n o visibilit y impact s ar e expecte dbase do na VISCREE N analysi s canno t b e justifie dbase d o nth e typ e o f mode l tha t wa s used . VISCREE N i s a plume visua l impac t screenin g mode l intende dfo r us e i nevaluatin g th e potentia l fo r visibilit y impairmen t du e t o plume impacts . I nthi s case , the modelin g result s onl y allow a conclusio ntha t ther e i s low potentia l fo r visibilit y impairmen t du e t o plume s i nth e clas s I are a a s a resul t o f emission s from th e propose d project . VISCREE N

canno t determin e a source' s potentia l t o contribute t o regiona l haze , whic hi s the mos t insidiou s visibilit y proble m

i nEverglade s N P andth e surroundin g region . Visibilit y i nth e souther nandeaster nU.S . ha s degrade dsteadil y sinc e th e earl y

1950's , wit hth e mos t dramati c change s occurrin g i nth e summe r months . O na nannua l averag e basis , sulfate s ar e responsibl e fo r nearl y 4 0 percen t o f the mas s budge t andove r 5 0 percen t o f th e ligh t extinctio nbudge t i nth e park ; nitrate s contribut e abou t 1 5 percen t t o ligh t extinction ; an dorganic s accoun t fo r betwee n1 5 percen t t o 2 5 percen t o f th e ligh t extinction , dependin g o nassumption s abou t th e hygroscopi c characteristic s o f thes e compounds . Ther e i s som e seasonal variabilit y o f visibility-reducin g aerosols , bu t sulfate s predominat e a s th e mos t Importan t contributo r t o visibilit y reductio ni never y season , wit hcontribution s rangin g fro

m 4 2 percen t i nth e summe r t o a s hig ha s 6 4 percen t i nth e spring . Nitrate s andorganic s continu e t o b e nex t i nimportance . Monitorin g and recentl y develope dmodel s ma y provid e a mean s o f assessin g th e contributio n o f individua l source s t o thi s problem . W e encourag e th e FDE Rt o tak e all step s possibl e t o reac hnationa l andStat e visibilit y

goal s by

limitin g pollutants , suc ha s S0 2 

### , N0 X 

### . andPM , tha t contribut e t o visibilit y degradatio nno t onl y i nEverglade s NP , bu t i nth e whol e region .

CONCLUSION S AN D RECOMMENDATION S
1 . Give nth e potentia l S0 2 

### clas s I incremen t problem s an dth e potentia l impact s o nsensitiv e ai r qualit y relate dresource s a t Everglade s NP , and th e fac t tha t lowe r sulfu r conten t oil s ar e bein g require dfo r othe r ga s turbin e projects , w e recommendthat ?• the - FDE Rlowe r th e maximum sulfu r conten t fo r th e FP L turbines-fro m 05spercen t t o 0.2 0 percent . 8P.1 5

10/24/9 5 16:4 6 ©30 3 96 9 282 2 WAS O DENVERIfl014/01 7

2 . We recommen d tha t th e FDE Rseriousl y conside r Selectiv e Catalyti c Reductio n t o contro l turbin e N0 Xemission s fo r th e coa l derive d ga s option , and fo r futur e permi t application s fo r combined-cycl e ga s turbin e project s a s well .
3 . Considerin g th e potentia l clas s I incremen t violation s and impact s t o visibilit y

and othe r ai r qualit y relate d value s a t Everglade s NP , i f th e FDE R doe s no t lowe r the FP L fue l oi l limitatio nt o 0.2 0 percent , FP L shoul d perfor m

cumulativ e incremen t an d ambien t impac t analyse s fo r Everglade s NP .

4 . Th e FDE R shoul d includ e a permi t conditio ni nthe FP L permi t tha t make s i t clea r tha t clas s I impact s mus t be adequatel y assesse d befor e constructio n o f Phase s I I an d II I ma y

commence .
5 . The Stat e o f Florid a shoul d tak e al l step s possibl e t o reac hnationa l an d Stat e visibilit y

goal s b

y limitin g pollutants , suc ha s S0 Z , N0 J ( and PM , tha t contribut e t o visibilit y degradatio nno t onl y i nEverglade s NP , bu t i n th e whol e region .
6 . I n orde r fo r u s t o b e abl e t o adequatel y asses s potentia l impact s o n sensitive ai r qualit y relate d values , futur e clas s I impac t analyse s shoul d includ e estimate s o f th e tota l ambien t concentration s (incremen t plu s background ) a t th e clas s I area .

":>U10/24/9 5 16:4 6 ©30 3 96 9 282 2 WAS O DENVE Rifijoia/l?. *



# b N361 5 (SER-ODN )

Mr . Clai r Fanc

y Chief , Bureau o f Ai r Regulatio n Florida Departmen t o f Environmenta l Protectio n Twi nTower s Offic e Buildin g 260 0 Blai r Ston

e Roa d Tallahassee , Florid a 32399-240 0

Dea r Mr . Fancy :

We hav e reviewe

d th e revise

d draf t Preventio

no f Significant Deterioration permi t modificationreques t fo r th e Dad e Count y Resourc e Recover

y Facilit y (Dad e County ) locate

d i nMiami , Florida . Dad e Count y i s locate

d approximatel y 10-k m eas t o f Everglade s Nationa l Par k (NP) , a Clas s I ai r quality are a administere

d b y th e Nationa l Par

k Service . Dad e Count y

i s proposin

g to upgrad

e th e ai r pollutio

ncontro l equipmen t o n fou r municipa l wast e combustor s resultin g i n reduction s o f particulat e matter , aci d gase s an

d mercur

y emissions . Th

e emission s fro

m eac hcombustor uni t woul d b

e controlle

d b y a spra y dryer scrubber followe d b y a baghous e an

d a mercur y co.ftti.o

l tjybitffl

T w e agree tha t thes S eontral s represent th e bes t availabl e contro l technology .

Base d o n ou r revie w o f th

e permi t applicatio nan d give nth e associated emissio n decreases , th

e propose

d projec t shoul d hav e a ne t ai r quality benefi t on sensitiv

e resource s a

t Everglade s NP .
W e appreciat e receivin g thi s applicatio

nearly i n th e revie w process . Pleas e provide u s a cop

y o f th e fina l permi t upo

ncompletion . I n th e meantime , i f you hav e an y question s regardin

g ou r comments , pleas e contac t Bu d Rolofson o f ou r Ai r Quality

Divisio

ni n Denve r at (303 ) 969-2071 . Sincerely ,

Regiona l Directo r Southeas t Regio

n
bcc : SER0 : AQ C (Brendha

nZubricki ) EVER : Supt AQD-DEN : Bu

d Rolofso

nP.1 7

10/24/9 5 16:4 7 ©30 3 96 9 282 2 tfASO DENVE R10016/01 7

Mr . C . H . Fanc

y Chief , Bureau o f Ai r Regulatio n Florida Departmen t o f Environmenta l Regulatio n Twi nTower s Offic e Buildin g 260 0 Blai r Ston

e Roa d Tallahassee , Florid a 32399-240 0

Dea r Mr . Fancy :

W e have reviewe d th e Preventio n o f Significan t Deterioratio n (PSD ) Applicatio

nfo r th e ne w cement kil n(kiln#2 ) propose d b y Florid a Crushed Ston e (FCS ) Company . Th e kil nwoul d b

e locate

d 2 0 k m southeas t o f Chassahowitzka Wildernes s Are a (WA) , a Clas s I ai r qualit y are a administere

d b y th e U.S . Fishan

d Wildlif e Servic e (FWS) . Th e ne w kil n woul d emi t significant amount s of PM-10 , sulfu r dioxid

e (S0 : ) , nitrogen oxide s (NO.) , an

d carbo nmonoxide . FC S currently operate s kil nlfl

a t th e site .

W e understan

d tha t another PS D applicatio nha s bee

nsubmitte

d fo r a modificationt o th e powe r plan

t o nth e FC S property . Thi s applicatio nwa s submitte

d b y Centra l Powe r an

d Lime , formerly

Florid a Crushe

d Stone . Bot h Centra l Powe r an

d Lim e an d Florid

a Crushe

d Ston e ar e unde r commo

n ownership/control , an d therefore emission s fro m bot hpropose

d project s shoul d b

e considere

d together fo

r PS D review . Ai r Quality

Analysi s
Th e ai r quality

impac t analysi s fo r th e propose

d cemen t kil ni s incomplete . Th e informatio

ninth e permi t applicatio nan d th e additiona l modelin g analysi s (Marc

h21 , 1995 ) i s insufficient t o determin

e whethe r emission s fro m th e proposed ne

w kil n(kiln#2 ) an

d other source s a

t th e facility (kil n# 1 an

d th e powe r plant ) woul d hav e a significant impac t a t Chassahowitzka WA . W e understan

d tha t you

r offic e wil l b

e requirin

g additiona l modelin

g t o b e performe

d before th

e applicatio

ni s deeme

d complete . W

e reques t tha t FC S mode l Clas s I area impact s usin g revised facility

emissio

nrate s specifie

d b y you r office . Upo

nrevie w o f th e revise d modelin

g analysis , w

e wil l determin

e i f a cumulativ

e S0 2 Clas s I incremen t analysi s i s required . Also , i f there i s a chang e i nth e facility's'NO , or PM-1 0 emissio nrate s fro

m th e present analysis , thos e Clas s I impact s mus t als o b e recalculated . Th e March21 , 1995 , analysi s indicate

d tha t a cumulativ

e nitrogendioxid

e (N0 2 ) Clas s I incremen t analysi s i s require d becaus e predicte

d N0 2 impact s excee d th e FW S Clas s I significan t leve l o f 0.02 5 microgram s pe r cubi c meter . 

# r Th e revise

d ai r qualit

y impac t analysi s should * als o includ

e annua l impact s fro m lea d (Pb) , berylliu

m (Be)s , an

d mercur

y (Hg ) emission s to th e Clas s I area . Th

e effect s o

nresource s fro

m thes e pollutant s shoul d b e addressed i nth e ai r qualit

y relate d value s analysis .10/24/9 5 16:4 7 ©30 3 96 9 282 2 WAS O DENVh K BJ3

-

Th e VISCREE

N analysi s wa s incorrectly done . Th

e emission s o f sulfuri c aci d mis t (H

2 S0< ) fro

m th e propose

d kil nshoul d b

e include

d i nth e analysi s a s primar y sulfat e (SO

J . Also , th

e VISCREE

N 2 analysi s applie

d win d spee d change s t o th

e meteorologica l dat a that ar e inappropriate . Th e Environmenta l Protectio nAgenc y documen

t o nVISCREE

N (Workboo

k for Plum

e Visua l Impac t Screenin g an d Analysis . EPA-450/4-88-015 , September 1988 ) doe s no t indicat e tha t compensatio nt o win

d speeds , usin

g win d spee d profil e adjustment s calculations , ar e t o b e applied . Th

e revise

d VISCREE

N analysi s shoul d no t apply thes e win

d spee d profil e changes . I naddition , th e analysi s assume

d a backgroun

d visua l rang

e (BVR ) o f 2 5 km . Th e analysi s shoul d b

e don e usin g a BV Ro f 6 5 km , th

e 90thpercentil e annua l visua l range for th e wildernes s area .

Du e to th e comple

xnatur e of thi s permi t application , pleas e requir e th e applican t t o submit , i nadditio nto th e writtenanalysis , th e modeling input an

d outpu t file s t o us o na 3. 5 flopp

y disk(s ) fo

r bot hth

e incremen t an d visibilit y

modelin

g analyses .
Bes t Availabl e Contro l Technolog y (BACT )

Th e BAC T analysi s appear s to b e complete . Ai r Quality

Related Value s (AQRV ) Analysi s

N o Clas s I AQR

V analysi s wa s done , an d thus , thi s par t o f th e application i s incomplete . Than k you fo

r givin g u s th e opportunit

y t o commen

t o nthi s permi t application . W

e appreciat e you

r cooperation-i n notifyin g u s o f proposed project s wit hth

e potentia l to impac t th e air' s qualit

y an d relate

d resource s o f ou r Clas s I ai r qualit y areas . I f yo

u hav e questions , pleas e contac t Elle nPorte r o f ou

r Ai r Qualit

y BranchinDenve r a t (303 ) 969-2617 . Sincerely ,

Noree nK . Cloug

h Regiona l Director

cc : Jewel l Harper , Chie f ' Ai r Enforcemen t Branch Air , Pesticide s an

d Toxi c Management Divisio n "J.S . EPA , Regio

n4 -

- 34 5 Courtlan

d Street , N E ••;•:•.: <-...-!xMi.

' Atlanta , Georgi a 30365 ' - ^ • •
bcc : FWS-REG . 4 : AQ C CHAS : Refuge Manage r AQD-DEN : EllenPorte r

Nationa l Park Servic e - AI R P.O . Bo x2528 7 Denver , CO 8022 5